﻿/*******************************************************************************************
 * Copyright (c) 2009 Alex Robson, Rob Simmons, Craig Israel, and Rachel Twyford
 *
 * Use of this software in any form requires that you have both 
 * read and agreed to the following terms:
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions: 
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution.
 * Neither the name of Nvigorate nor the names of its contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************************/


using System;
using System.Collections.Generic;
using System.Xml.Linq;

namespace Nvigorate.Data.Query
{
    internal class QueryDeserializer
    {
        private static Dictionary<string, Func<XElement, IQueryObject>> _deserializerLookup
            = new Dictionary<string, Func<XElement, IQueryObject>>()
                  {
                      {"assignmentColumn", x => new AssignmentColumn().ParseXElement(x) as IQueryObject },
                      {"between", x => new Between().ParseXElement(x) as IQueryObject },
                      {"column", x => new Column().ParseXElement(x) as IQueryObject },
                      {"clause", x => new CriteriaClause().ParseXElement(x) as IQueryObject },
                      {"criteria", x => new SearchCriteria().ParseXElement(x) as IQueryObject },
                      {"delete", x => new Delete().ParseXElement(x) as IQueryObject },
                      {"equal", x => new Equal().ParseXElement(x) as IQueryObject },
                      {"function", x => new Function().ParseXElement(x) as IQueryObject },
                      {"greater", x => new Greater().ParseXElement(x) as IQueryObject },
                      {"group", x => new Group().ParseXElement(x) as IQueryObject },
                      {"greaterOrEqual", x => new GreaterOrEqual().ParseXElement(x) as IQueryObject },
                      {"in", x => new In().ParseXElement(x) as IQueryObject },
                      {"insert", x => new Insert().ParseXElement(x) as IQueryObject },
                      {"insertColumn", x => new InsertColumn().ParseXElement(x) as IQueryObject },
                      {"less", x => new Less().ParseXElement(x) as IQueryObject },
                      {"lessOrEqual", x => new LessOrEqual().ParseXElement(x) as IQueryObject },
                      {"like", x => new Like().ParseXElement(x) as IQueryObject },
                      {"list", x => new QueryList().ParseXElement(x) as IQueryObject },
                      {"literal", x => new Literal().ParseXElement(x) as IQueryObject },
                      {"notEqual", x => new NotEqual().ParseXElement(x) as IQueryObject },
                      {"order", x => new Order().ParseXElement(x) as IQueryObject },
                      {"orderColumn", x => new OrderColumn().ParseXElement(x) as IQueryObject },
                      {"page", x => new Page().ParseXElement(x) as IQueryObject },
                      {"property", x => new Property().ParseXElement(x) as IQueryObject },
                      {"reference", x => new Reference().ParseXElement(x) as IQueryObject },
                      {"schemaColumn", x => new SchemaColumn().ParseXElement(x) as IQueryObject },
                      {"select", x => new Select().ParseXElement(x) as IQueryObject },
                      {"table", x => new Table().ParseXElement(x) as IQueryObject },
                      {"tableVariable", x => new TableVariable().ParseXElement(x) as IQueryObject },
                      {"update", x => new Update().ParseXElement(x) as IQueryObject },
                      {"where", x => new Where().ParseXElement(x) as IQueryObject },
                  };

        public static T DeserializeAmbiguousChild<T>(XElement element) where T : class
        {
            return _deserializerLookup[element.Name.LocalName](element) as T;
        }
    }
}
